Improvement in grinding-machines



Patented 1an. 6, 1874.

WILLIAM J. REAGAN, OF ROYERS FORD, PENNSYLVANIA, ASSIGNOR TO ROYERS FORDIRON-FOUNDRY, OF SAME PLACE.

IMPRGVEMENT IN GRINDING-MACHINES.

Specilicaton forming part of Letters Patent N0. 146,279, dated January6, 1874; application filed October 28, 1873.

To all whom, t may concer/n:

Be it known that I, WILLIAM J. REAGAN,

- of Ro ers Ford Montoomer count f Pennsylvania, have invented a Machinefor Grinding Sad-lrons, Ste., of which the following is a specification:

The object of my invention is to facilitat the grinding of sad-irons andother articles by attaching them to a holder, A, so adapted to a frame.,B, that an operator can move the sadiron to and fro laterally, andvibrate it against the face of the grindstone H with his hands, whilethe frame is so hinged and so connected to a treadle that with his footthe operator can apply the necessary pressure of the sad-iron againstthe stone, all as shown in the perspective view, Figure l, of theaccompanying draw- 1n g.

rlhe spindle of the grindstone His caused to revolve in suitablebearings a a on a frame, D, which is secured to a base-plate, E, and tothe latter is hinged the rear end of a treadle, F, which is so connectedby a cord, strap, or other suitable device to-the rocking frame B thatthe operator can, by placing his foot on the treadle, force the saidframe toward the grindstone, from which, however, the frame will fallback when theftreadle is released from the pressure of the foot.

It should be here understood that while the lower end of the frame B isso hinged that it can be vibrated from and toward the grindstone, thehinge is so connected to the base by a pin, a', that the frame can bevibrated laterally on the said pin, for a purpose explained hereafter.

The holder A consists of a spindle, b, pro vided with handles d, thespindle being adapted to slots in projections e c in front of the frameB, the central portion of the spindle between the said projections e cbeing formed for the reception of the object to be ground. In thelpresent instance, this portion of the spindle consists of a slottedplate, through which the handle of the sad-iron is inserted, and thereconned by a wedge, f, as shown in the vertical section, Fig. 2.

The operator seizes the handles d d of the holder, and, while applyingpressure to the treadle with his foot, vibrates the holder in itsbearings on the frame B, or moves the holder to and fro laterally, orperforms both operations simultaneously, so that every part of the faceof the sad-iron may be exposed to the action of the stone.

The sad-iron may, through defect in casting, be occasionally of such acharacter as to demand a greater reduction at some points than others.This the operator is enabled to accomplish by twisting the frame Blaterally on its pin and thereby directing to the griudstone thatportion of the face of the sad-iron which demands the most reduction.

After the grinding of the sad-iron has been y completed, the operatorremoves his foot from the treadle, permits the frame B to fall back,removes the holder, detaches the sad -iron therefrom, afxes anew one tothe holder, adjusts the latter to the frame, and repeats theabove-described operation.

It will be evident that my invention is not restricted to the grindingand polishing of sadirons, for there are many articles of cast iron andother metal the grinding of which may be facilitated by theabovedescribed niachine, which demands no alteration to it it for thegrinding of di'lferent objects than the adapting of the central portionof the holder to the retention of the object to be ground and polished.It will also be evident that the machine may be used for grinding otherthan plane surfaces. Rounded objects, for instance, can be ground andpolished by it with facility.

I claim as my invention- The combination, with a grindstone, of arocking frame, B, to be controlled by the operators foot, and a holder,A, so adapted to the said frame that it can be both vibrated and movedto and fro laterally therein, as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses. y

TWM. J. REAGAN.

Witnesses WM. A. STEEL, HARRY SMITH.

